**Appendix A**

**Figure A1.** Display of the line of Czechoslovak fortifications in the Moravian-Silesian Region demonstration of graphic interpretation of the obtained data, presentation of the current structural and technical condition of the CEFs using the QGIS program.

**Figure A2.** Situation of A-CEFs and corresponding sections of SA-CEFs (from A to I) in the borderlands of the Moravian-Silesian Region [28,33–35].

**Figure A3.** Selected parts of fortification line in Moravian-Silesian Region. Individual parts (**A**–**I**) are shown in Figure A2. Key: green—Existing A-CEF or UA-CEF; pink—Construction was initiated A-CEF; orange—destroyed A-CEF; blue—obliterated A-CEF; red number—SA-CEF.

**Figure A4.** (**A**): Each A-CEF object has unique genius loci (e.g., SA-CEF number 38). (**B**): A-CEFs represents a specific type of military brownfields (e.g., SA-CEF number 17). (**C**): SA-CEF number 38 is one of the existing and highest situated objects (715 m above sea level). It serves as an occasional refuge for adventurers and 'could certainly tell' many stories. (**D**): Some A-CEFs can be easily mistaken for rock (e.g., SA-CEF number 39).

**Figure A5.** (**A**): A group of haralds (*Scoliopteryx libatrix*) on the walls of a bunker that was burned during World War II. We can observe orange drawings on the enclosed wings that resemble the letter 'M' (SA-CEF number 27). (**B**): Land snail *Monachoides incarnatus* hidden in a wall gap (SA-CEF number 37).


**Table A1.** Overview table of SA-CEFs studied objects with their description. The numbering of the individual SA-CEFs corresponds to the data in Table 1—part 1.

**Table A2.** Overview table of SA-CEFs studied objects with their description. The numbering of the individual SA-CEFs corresponds to the data in Table 1—part 2.



**Table A3.** Table of SA-CEFs study objects with data that were obtained by field survey (2014-2021). The numbering of the individual SA-CEFs corresponds to the data in Table 1—part 1.

**Table A4.** Table of SA-CEFs study objects with data that were obtained by field survey (2014-2021). The numbering of the individual SA-CEFs corresponds to the data in Table 1—part 2.


**Table A5.** Table of SA-CEFs study objects with data that were obtained by field survey (2014-2021). The numbering of the individual SA-CEFs corresponds to the data in Table 1—part 3.



**Table A6.** Species of butterflies and moths (Lepidoptera) and their abundances in each SA-CEFs in 2014, F—frequency in %, D—dominance in %.


**Table A7.** Species of land snails (Gastropoda) and their abundances in each SA-CEFs in 2014, F—frequency in %, D—dominance in %.
